Best Pony?

I have a question for you guys. Well two really. Something I'm curious about and thought I'd look into. My questions are-

"Who is your daddy and what does he do?"

No, no! Bad Arnold, bad. Get back in the corner! Sorry about that folks, I'm dealing with some stuff right now. Trying to work out my issues with Pre-Governator Arnold and Post-Governator Arnold, before the new Terminator comes out. You know, so I don't go in with blind rage at the movie.

Anyway, my questions:

1) Which of the Mane Six is you favorite?
2) Why?

This is not a contest or a debate. I'm only asking for opinions so please don't start a fight with someone just because you don't agree with them. Thank you.